Automatic speed-change mechanism



Sept. 29, 1925.

D. S. DE. LAV/AUD.A

AUTMATIC SPEED CHANGE MECHANISM Filed July v,

1924 2 Sheets-Skaai',y 2

Invenor. 1ML JMA/M E wm E E. n

IU ance, and further, in providing Pmedsepe 29,1925.

UNITEo STATES DmTBI SENSLUD Dl LLVAUD, l' PARIS, FRANCE.

AU-TOIATIC SPGE IECHANISI.

appueaun ma my 7, 1m.' sum mi. 724,613.

To all whom it may concern:

Be it knownthat I, Dmrrnr SaNsAUD DE Lavaux), a citizen of the United States of Brazil, and resident of the city of Paris, in

the Republic of France, have invented certain new and useful Im rovements in an Automatic Speed-Change echanism, as described in the following specification, and illustrated in the accompanying drawings, that form part of the same.

The rincipalobjects of this invention are, to evise an improvement in the type of a transmission mechanism which utilizes an oscillatable member rotatably connected with the drive shaft to operate a plurality of reciprocable members to impart motion to the driven shaft, particularly in the transmission of the angular thrust of the oscillatable member to the elastic compensating fo u as d??? means rsuppremg ero ono e oscillatable member and to generally improve the lubricating system.

The' principal features of the invention Il consist in the novel construction and arrangement of co- 'spherical surfaces on vthe owllatable mem and the tubular colnettlzltion theloscilltablle nemar an e resisting coup e an w ere e rotation of the oscillatable member L restrained by laterally disposed adjustable spring members.

A further important feature consists in the novel t of oil ducts extendthe oscillatable member which communicate with the journal ends of the reciprocating members through said `members being formed htlw. F l d1- Inthe igurelisaongitu'- nal mid-sectionl view partly broken away of my improved mechamsm. Figure 2 is a cro sectional view through the line 2--2 of Figure 1. y t

Figure 3 is a horizontal and` 'vertical section o the driven shaft an its su ports and driving connections.

the construction illustrated the driving `casing 3 and the portion 4 thereof is rovided with the axial slot 5 and an ansl t ly dlspoeed` longitudinally arranged o f 1 A sleeve 7 is pivotally mounted on a pin u 8 slidably arranged inthe slot 5 yand said resistv ing from the cetral shaft to radial ducts in shaft1isjournaledinthebearings2inthe` sleeve supports the bearings 9 which carry the oscillating disc 10.

A convexed part spherical surfaced flange 11 is arranged at the rearward side of the disc and engages the concaved face of a cupped member 12 of a corresponding curvature,v both convexed and concaved surfaces being concentric to the axis of the pin 8.

The cupped member 12 forms part of the sleeve 13 slidably arranged in the bearing. member 14 arranged within the casing 3 and said sleeve is connected to a tubular member 15 which operates against the elastic resisting couple 16 formed by a plurality of Belle. lville discs adjustably arranged at the rear 70 end of the casing. A

The oscillations of the disc 10 are opposed by the elastic couple 16 lthrough the tube and such oscillation is governed by the movement of the pin 8 in the axial slot 5 and the co-cperationY of a pin 17 extending transversely of the sleeve 7 and engaging the angle slot 6 in the driving shaft.

The functioningof the pin 17 in the angle slot 6 has been previously disclosed and itis not necessary to submit any dissertation on its peculiar operation in this specification,y suice it to say, that according to the torque in the driven shaft the resistance to the inclination of the oscillating disc is varied and accordingly as that resistance varies the location of the pin 17 in the angularly sed slot is altered.

The disc 10 is provided with a plurality of spherical pockets 18 in which the spherical locks 19 are yjournalled, said blocks forming the means for connecting the recip rocating rods 20 to the disc. A

The pin 8 is hollow and has a transverse o therethrough and oil forced into the ot 5 ows through the pin to the circum ferential groove 21 in the inward side of the disc and from this groove 21 a plurality of radi1a8lchannels22 aredirected tothepock-V da The blocks 19 are bored transversely to communicate with the channels 22 and the rods are hollow and vat the opposite end said rods have secured thereto the spherical blocks 28 which are bored transversely so that oil is distributed over the wearing surfaces of the spherical blocks at both ends.

The disc 10 has secured to its outer imetertheendsofayokememher24w ch is provided with a pin 25 centrally arranged 11 lil) and this pin extends into 'a transverse`recess 26 in the bottom of the casing 3.

Within the recess 26 are arranged a pair of pistons 27, the heads ofwhicli engage the pin 25 and said pistons contain, the spiral -\compression springs 28, the tensionof which is adjusted by means of the screws 29.

By means of the yoke and spring piston arrangement described the rotative tendency ofthe disc 10 is iexibly cushioned and any stresses incident to the tendency to-r0tate will thus be relieved. Y

The oiling of the structure is effected by means of a pump 30 arranged in the bottom of the casing 3 below the driven shaft, ,the

pump piston being operated by an eccentric' i nism the combination with the driving and driven shafts, of an oscillatable member ro-v tatably mounted on said driving shaft and f -longitudinally movable thereon andoperatively connected with the driven shaft, a

slidable member operatively connected with said oscillatable member, a flexible resisting member engaging said slidable member, and

Y means for shifting the axis of said oscillatable member in accordance with its longitudinal movement on said driving shaft.

2. In an automatic speed change mechanism, the combination With the driving and driven shafts and an oscillatable member rotatable on the driving shaft and having its axis movable thereon and operatively connected with the driven shaft, of a member slidably supported in axial alignment with,

the driving shaft and having a spherical concaved surface co-axial with the axis of the oscillatable member, a convexed surface carried on the oscillatable member and engaging the concaved surface, andan elastic resisting cou le operatively engaging said slidable mem er.

3. In an automatic speed change mechanism, the combination with the driving and j other ends of said hollow rodsfor operating driven shafts and an oscillatable member rotatable on the driving shaft and having its axis movablel thereon' and -operatively con-v 1 nected with the driven shaft, of a member slidably supported and slidably engaging said oscillatable member, and an elastic resisting couple co-operating with said slidable member, and means secured to-said oscillatable member adapted to yieldingly resist the turning of said oscillatable member. 4. An automatic speed change-mechanism, driving and driven shafts and an oscillatable `member rotatable on the driving shaft and having its axis movable thereon and operatively connected withA the 'driven shaft, a member slidably sup rted and slidably engaging said oscillata le member, an elastic resisting couple co-operating with said slidable member, a yoke connected to said oscillatable member in alignment with its oscillating axis, an extension from said yoke, and spring members arranged in opposition and en aging said extension from said yoke to yieldingly resist the turning of the oscillatable member.

' 5. An automatic speed change mechanism,

driving and driven shafts and an oscillataeratively connected with the driven sha a member slidably supported and slidably engaging said oscillatable member, an elastic resisting couple co-operating with said slidable member, a yoke connected to said oscillatable member in alignment with.. its oscillating axis, an extension from said yoke, a cylindrical recess 'arranged in alignment with the yoke, pistons arranged in said recess and engaging said projection from the yoke at either side, springs within said pistons, andmeans for regulating the pressure of said springs.

6. In an automatic speedchange mechanism, a drive shaft havin a longitudinal slot and a longitudinal ori ce leading from said slot, means f or said longitudinal ori ce into said slot, an oscillatable member, a pin slidable in said slot and pivotally supporting said oscillatable member, 'said pin having an orifice therethrough, a plurality of ducts in Said umping oil through' ios oscillatablemeinber communicating vvith the orifice in said pin, aplurality of sockets in. said oscillatable member connected with said' the driven shaft.-

Y v DlMjITB-i .sENsAUnfpE LAvAUn 

